Superalloy is a metal material based on iron, nickel and cobalt, which can work for a long time above 600℃ with certain stress. With the performance of excellent high-temperature strength, good oxidation and thermal corrosion resistance, comprehensive performance of stainless steel, such as fatigue resistance and fracture toughness, superalloy is mainly applied to gas filtration, powder recycling under the high temperature, such as high-density ethylene catalyst filter.